Hmm, try deleting the .B25.blend file in your .\.blender\ subfolder, this is where the settings are saved. By default, view rotation uses MMB - if it doesn't work it must be something with the mouse. And if you have one of those mice with a lot of buttons, you can try changing view3d.rotate in the keymap editor to Button 4 or 5 etc.

Nikprodanov wrote:Hmm, try deleting the .B25.blend file in your .\.blender\ subfolder, this is where the settings are saved. By default, view rotation uses MMB - if it doesn't work it must be something with the mouse. And if you have one of those mice with a lot of buttons, you can try changing view3d.rotate in the keymap editor to Button 4 or 5 etc.

I did that but it still didn't work and it wrote the files back.

I have noticed something else though: When I launch the Blender program, inside the command line window that launches it says:

Blender is a portable program so it works the same no matter where you put it/unzip it. The "bundled python" is usually a DLL in the main folder (python31.dll etc.) and it's a library used for stuff like running plugins and UI autogeneration.

Try this recent Win64 build and see if it works. If it doesn't, then you can do a test if it really isn't a keymap conflict thing. Select the default cube and press G to grab it. While it's grabbed, hold down MMB to see if it will do axis-restriction. If it works then it probably has something to do with a keymap conflict.

In the end if it turns out to be a bug you can submit a bugreport to the devs and they'll take a look at it.

Oh, I restarted Blender and hit File->Load Factory Settings, too, after deleting the drivers. Before that it wouldn't work, but I'd been screwing around with the keymappings while trying to fix the problem, so that might have had something to do with it.

i solved problem by going to control panel-mouse settings-on mouse properties there is a section to change to change settings to enable program-specific settings i set this to Blender and i changed my middle button function to ALT when using this program.

It works as follows:-1.Wheel only=Zoom in and Out 2.Ctrl+Wheel=Left to right 3.Ctrl+Alt+Wheel=360 spin 4.Alt+Shift=Pan.